From the US Trademark site:
DORIS DODSON
Goods and Services (EXPIRED) IC 025. US 039. G & S: JUNIOR MISSES' STREET, SPORT, AND HOUSE DRESSES. FIRST USE: 19360915. FIRST USE IN COMMERCE: 19360915
Mark Drawing Code (5) WORDS, LETTERS, AND/OR NUMBERS IN STYLIZED FORM
Design Search Code
Serial Number 71536600
Filing Date October 3, 1947
Current Filing Basis 1A
Original Filing Basis 1A
Registration Number 0500572
Registration Date June 1, 1948
Owner (REGISTRANT) FOREST CITY MANUFACTURING COMPANY DOING BUSINESS AS DORIS DODSON GARMENT COMPANY CORPORATION MISSOURI 1641 WASHINGTON AVENUE ST. LOUIS MISSOURI
Assignment Recorded ASSIGNMENT RECORDED
Type of Mark TRADEMARK
Register PRINCIPAL-2(F)
Affidavit Text SECT 15.
Renewal 1ST RENEWAL 19680601
Live/Dead Indicator DEAD
So, the label was started in 1936, was located in St. Louis, was a Junior line and was still in business in 1968.